Watsonville Charter School of the Arts: math

The shaded band is this school's normal range. If nothing about how it works changes, nearly every future year should land inside it. Zero means the typical student just meets the state standard. The small numbers under the years are how many students were tested.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 8.

3rd The average 3rd grader scores 12 points under the grade 3 bar. 2424 vs. 2436.
4th The average 4th grader scores 33 points under the grade 4 bar. 2452 vs. 2485.
5th The average 5th grader scores just under the grade 4 bar. 2485 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 33 points under the grade 5 bar. 2495 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores 18 points under the grade 6 bar. 2534 vs. 2552. The 7th-grade bar is 2567.
8th The average 8th grader scores 20 points under the grade 5 bar. 2508 vs. 2528. The 8th-grade bar is 2586.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

Step 1 · Each year's result

For each grade tested, take the average (mean) scale score from the California Department of Education's results file, and subtract the lowest score that counts as "Standard Met" for that grade. That is the grade's distance from standard. Weight each grade by its share of the students tested, then add the grades up. Grades where the state hides the average because ten or fewer students tested are left out entirely.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,285	2421.4	− 2436	−14.6	× 43 / 166	−3.8
4	90,288	2426.8	− 2485	−58.2	× 42 / 166	−14.7
5	90,289	2421.0	− 2528	−107	× 31 / 166	−20
6	90,292	2492.3	− 2552	−59.7	× 28 / 166	−10.1
7	90,293	2527.0	− 2567	−40	× 22 / 166	−5.3
Sum, rounded to a whole point						−54

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,763	2414.7	− 2436	−21.3	× 43 / 195	−4.7
4	83,765	2442.3	− 2485	−42.7	× 41 / 195	−9
5	83,767	2442.0	− 2528	−86	× 41 / 195	−18.1
6	83,770	2446.1	− 2552	−105.9	× 22 / 195	−11.9
7	83,771	2498.0	− 2567	−69	× 26 / 195	−9.2
8	83,773	2518.6	− 2586	−67.4	× 22 / 195	−7.6
Sum, rounded to a whole point						−61

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,080	2426.1	− 2436	−9.9	× 22 / 186	−1.2
4	86,082	2433.9	− 2485	−51.1	× 44 / 186	−12.1
5	86,084	2470.4	− 2528	−57.6	× 42 / 186	−13
6	86,085	2458.4	− 2552	−93.6	× 31 / 186	−15.6
7	86,088	2487.1	− 2567	−79.9	× 24 / 186	−10.3
8	86,089	2510.1	− 2586	−75.9	× 23 / 186	−9.4
Sum, rounded to a whole point						−62

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,311	2410.8	− 2436	−25.2	× 45 / 220	−5.2
4	86,314	2471.7	− 2485	−13.3	× 38 / 220	−2.3
5	86,315	2468.8	− 2528	−59.2	× 41 / 220	−11
6	86,317	2461.8	− 2552	−90.2	× 51 / 220	−20.9
7	86,319	2505.1	− 2567	−61.9	× 22 / 220	−6.2
8	86,322	2479.7	− 2586	−106.3	× 23 / 220	−11.1
Sum, rounded to a whole point						−57

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,910	2402.7	− 2436	−33.3	× 45 / 246	−6.1
4	86,911	2457.3	− 2485	−27.7	× 41 / 246	−4.6
5	86,912	2506.4	− 2528	−21.6	× 34 / 246	−3
6	86,913	2486.4	− 2552	−65.6	× 50 / 246	−13.3
7	86,914	2497.9	− 2567	−69.1	× 49 / 246	−13.8
8	86,915	2513.6	− 2586	−72.4	× 27 / 246	−7.9
Sum, rounded to a whole point						−49

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,179	2393.0	− 2436	−43	× 45 / 256	−7.6
4	87,180	2416.1	− 2485	−68.9	× 44 / 256	−11.8
5	87,181	2458.8	− 2528	−69.2	× 45 / 256	−12.2
6	87,182	2444.5	− 2552	−107.5	× 45 / 256	−18.9
7	87,183	2506.6	− 2567	−60.4	× 42 / 256	−9.9
8	87,184	2533.0	− 2586	−53	× 35 / 256	−7.2
Sum, rounded to a whole point						−68

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,103	2391.6	− 2436	−44.4	× 44 / 265	−7.4
4	87,104	2398.7	− 2485	−86.3	× 48 / 265	−15.6
5	87,105	2442.2	− 2528	−85.8	× 38 / 265	−12.3
6	87,106	2473.6	− 2552	−78.4	× 45 / 265	−13.3
7	87,107	2501.6	− 2567	−65.4	× 45 / 265	−11.1
8	87,108	2526.7	− 2586	−59.3	× 45 / 265	−10.1
Sum, rounded to a whole point						−70

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,075	2416.7	− 2436	−19.3	× 43 / 280	−3
4	87,076	2433.1	− 2485	−51.9	× 50 / 280	−9.3
5	87,077	2439.9	− 2528	−88.1	× 49 / 280	−15.4
6	87,078	2451.5	− 2552	−100.5	× 46 / 280	−16.5
7	87,079	2514.2	− 2567	−52.8	× 50 / 280	−9.4
8	87,080	2491.4	− 2586	−94.6	× 42 / 280	−14.2
Sum, rounded to a whole point						−68

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,757	2399.6	− 2436	−36.4	× 40 / 272	−5.4
4	86,758	2417.6	− 2485	−67.4	× 48 / 272	−11.9
5	86,759	2451.6	− 2528	−76.4	× 49 / 272	−13.8
6	86,760	2448.1	− 2552	−103.9	× 45 / 272	−17.2
7	86,761	2498.5	− 2567	−68.5	× 47 / 272	−11.8
8	86,762	2522.7	− 2586	−63.3	× 43 / 272	−10
Sum, rounded to a whole point						−70

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,480	2423.9	− 2436	−12.1	× 41 / 254	−2
4	86,481	2451.7	− 2485	−33.3	× 44 / 254	−5.8
5	86,482	2484.8	− 2528	−43.2	× 42 / 254	−7.1
6	86,483	2494.9	− 2552	−57.1	× 48 / 254	−10.8
7	86,484	2534.4	− 2567	−32.6	× 41 / 254	−5.3
8	86,485	2507.9	− 2586	−78.1	× 38 / 254	−11.7
Sum, rounded to a whole point						−43

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −54, −61, −62, −57, −49, −68, −70, −68, −70, −43 → −60.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 1 · 2017→2018: 5 · 2018→2019: 8 · 2019→2022: 19 · 2022→2023: 2 · 2023→2024: 2 · 2024→2025: 2 · 2025→2026: 27 → average 8.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.1 × 2.66 = 21.5. Upper limit −38.7, lower limit −81.7.

Why 2.66? It is the standard factor from quality control, the work of Walter Shewhart and W. Edwards Deming. It turns "how much the result typically changes in a year" into "how far it can wander by chance alone".

Years with no result (no state tests were given in spring 2020) are skipped: the year-to-year change runs from the last year with a result to the next one.

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.